Poster Number 233
See more from this Division: Topical Sessions
See more from this Session: Innovative Methods for Investigating Flow and Transport in Karst Systems (Posters)
Abstract:
Alternative methods are being investigated to expedite the springshed delineation process. We are combining gamma logs of a few water wells with conventional driller's logs to construct detailed structural contour maps. Preliminary mapping indicates structurally and hydraulically controlled springsheds. Structurally controlled springsheds are thinly saturated aquifer systems. Hydraulically controlled springsheds typically have greater saturated aquifer thickness. A supplemental method uses temperature and conductance loggers to augment conventional spring hydrographs. Comparison of spring thermo- and chemo-graphs allows better hydrograph separation. This refined hydrograph analysis allows improved estimates of basin size and connectivity. Dye trace, structural, and hydrograph analysis may be further combined with major element chemistry and stable isotopes of hydrogen and oxygen in combination with pre-existing water quality data to look for seasonal influxes of recharge water. The results of these methods can then be compared with new and pre-existing dye trace results to gauge their effectiveness in delineating springsheds. The integrated use of a variety of hydrogeologic tools allows a better understanding of these highly dynamic karst systems.
See more from this Division: Topical Sessions
See more from this Session: Innovative Methods for Investigating Flow and Transport in Karst Systems (Posters)